Cork grinding and polishing machine.



` J. LGWMAN.

URK GRINDING AND Pl-LSHING MACHINE.

APPLIOATION FLBD JULY 19. 1905.

Patented Aug. 18, 1910.

J; LOWMAN. CORK GRINDING AND Pomsnmu MACHINE.

, APYLIQA'IION FILED JULY 19. 19051 rammed Aug 16,1910.

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. WLTNESSES A J. LOWMAN. coax GBJLNMNGYYAND PoLIsHtNG MACHINE.

AIPLIUATIOR FILED JULY 19. 1905.

Patented Aug. 16, IS'U;

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INVENTOR wn a@ asses www fifa' comi GmNDNG AND PQLISHING Marum;`

LPPLIOATION FIL'BD JULY 19. 1905.

Patented Aug.

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UN ySTAllilS- ltjitTENT OEFQlCl.

JOHN LOWMAN, F NEW CROSS, LONDON, ENGLAND. ASSIGNOB T0 ABMSTRGNG CRK COMPANY, OF PITTSBUBG, PENNYLVANIA, A CORPORATION 0F PENNSYLVANIA.

com; GBINDING AND Application tiled July 19,

To all whom it may wncemu i Be it known that I, JOHN LowMAN, of New Cross, county of London, England, have invented a new and useful CorkGrindin' and Polishinv Machine, of which the fo lowing is a fuli clear, and exact description, lreference being had to the accompanying drawings, forming partof this specilication, in whiche- Figure 1 is a side elevation partly broken away embodying my improvements; Fig. 2 is a sectional detail view through the delivery troughs and the adjacent parts; Fig. 3 is a front elevation of the same; and Fig.

4 is a detail view of the cam; Fig. 5 is a plan view, and Fig. G is a detail sectional view lon the line 6 6 of Fig. y t

This invention relates to ahr-ailingr ma chines, and while capable ot operating: upon many kinds of Work. is especially designed for Grinding and polishingeorks.

'l`1e present machine employs. an abrading disk having,r an abrasive face. and it is an im ortant object .of the invention to provi e for supporting the work in operative relation to the face of the disk. in such a manner as to elleetually and automatically accommodate corks of different sizes, thereby to prevent choking of the machine by 80 variations in the size of the work fed to the machine. Furthermore, the work is fed continuously to the machine and discharged automatically therefrom, wherefore it is another object of the invention to provide for 85 loosely supporting the work against the 'abrading disk in such a manner as to permit of the work traveling across the disk under the action thereof upon the ".uork, and thereby to etfectually discharge the work from the ab'rading disk.

In the drawings 2 represents the grinding wheel of `a cork machine, by which cor-ks, held against its surface by a revolving brush 3, are ground and finished, and dust passing off through a dust-box` and spout 4 and the finished oorks being delivered to a chute 5.

A' substantially horizontalcork support a is located between the brush 3 andthe wrinding disk or wheel in such positioifasxaii'ell ceive the corks as hey escape from the lower end of thetube 12, and to supportvthe corks while they are being` ground and fed along between the minding wheel and brush.

POLISHING MACHINE.

Specification of Letters Pa'teht. Patented Aug. 16, 1910.

1905. sriai memss.

My invention relates to the meaixs ly ject, into the hopper l5, and their levier ends plate l() which os'cillates with a tubular `snide-section 11 connected pivotaliy at its lower end to the tube 12 which conducts corks to the grinding vvlirel. "lfhe guide section l] is oscillated so as to connect its of the troughs 8. This oscillation is ci fueled conveniently by a double cern 13 on a shaft 14, the roller 15 of the cam havin;r a connection through a stub-Shaft 113 with the that the guide-section is moved away from the mouth of one of the troughs i'. 5l. that. mouth is obstructed by the curved plate i0 on guide-section 11, and when the delivery troughs are projected upward and away from the guidesectio1n their mouths are ohstructed by stops or pins 1T. These stops or pins enter slots in the troughs andare earried on levers 18, pivoted al. lit and urged toward the slots by springs 2t). The levers 18 are pivotallyxnounted on the delivery troughs 7, 8 and move therewith. so as to withdraw the pins li' by rollers or guides i-l which bear on inclined portions lo ot the levers, and are-actuated by a lever 22 operated by a can: 23 on the shaft 14 ami a con- Afleeting-link 24. The consequence is that as the oscillating section 11 is moved into register with one of the troughs 7 or the tion of the pins from the slots' and the mouth of the other trough is closed by the curved platelO, to which the tubular guide-section 11 is attached. The oscillating section 11 is scoured by a bracket 25 to the bar 113, the "lbwon end f-Sa` oscillatilw sei-tion heilig loosely secui'ed i #la pooketeu lu'axcliei 2G as shown in Fig. Q.'

In the operation of the devicev the cori-:s nass from the hopper G into the feed-troughs which th'e corlas are fed to the grinding adjustable bearings These trough pro` terminate. in tubular mouths above :feiuwcd mouths of the latter are opened by retrae Cta upper lend alternately to the ends or mouths l shifting guide-bar 16.y At the saine time into contact with the tilled trough, the corks i which have accumulated therein ass out througli the guide-section, While't e other trough is accumulating a iill sup ly of coi-ks. In this way a continuous fee is secured, and the choking of the corksgin the delivery passages and the intermittent delivery thereof is prevented. Theresult is that I very largely increase the capacity of the machine. i

The skilled mechanic will be able to modify the parts of the apparatus in many ways, since- 1. An abrading machine for corks or the like having a grinding or polishing disk, and a rotary element having a substantially circular surface ortion of yielding material arranged to hold) the corks against one face of the disk, substantially as described.

z. An abradin machine for corks or Athe like having a grinding or olishin disk, a rotary element having a su stantia y circular surface portion of yielding material arranged to hold the corks against one face of the disk, and connections arranged to drive the rotary element in the opposite direction to that of the disk, substantially as described.

3. A cork grinding and polishing machine having a grinding or polishing disk, and a rotary 'element having at least the major part ofl its peripheral portion in curved form, said curved-portion having a yielding material arranged to hold the corks against one face of thc as described.

4. A cork grinding and polishing machine having a grinding or polishing disk, and a rotary element having its periphery arran` ed to hold the corks against one face of t c disk and provided Witha brush sur-- face, substantially as described.

5. A grinding or polishing machine hav` ing a rotary grinding disk and a rotatable cylindrical work engaging element having a yieldable periphery in eoperative rela tion with one face of the disk to hold the work thereagainst, substantially as described.

6. An abrading machine for corks or the like. having a grinding .or polishing disk, means for continuously feeding Work to the disk, and a rotary element having a substantially circular surface portion of yieldinl material dis osed to loosely hold the wor against one ace .of the disk to permit travel grinding disk, substantially of the work acro described.

7. In an abradingmachine for corks or similar articles, aY grinding or polishing the disk, substantially as disk,v and an endless Work-engaging element having a brush portion coperating with one face of the disk to loosely hold the corks against and permit them to travel across the disk, substantially as described.

8. A. machine for grinding or polishing corks having a disk provided with am abrasive face. and a woiik-engaging roll mounted in substantialpara lelism with the disk and spaced therefrom to receive eoiks between the disk and toil. thc space between said members being unobstructcdptc permit of the unrestricted travel of the corks across the disk, and the periphery of the roll being yieldahle throughout the length of the roll to permit of the corks sinking therein and thereby prevent choking of the machine, substantially as described.

9. A machine for grinding or polishing corks having an upright abrasive disk and a substantially horizontal rotary brush mounted in substantial parallelism with the abrasive face of the disk andforining a work-engaging. element to hold corks be# tween the periphery of the brush and the abrasive face of the disk the space between thev brush and the disk being unobstrcted to fiermit o the unrestricted travel o the corks across the disk, substantially' as described. Y A

10. An abrading machine for corks or the like, having an upright grinding or polishing disk, a substantially horizonte.. cork support extending across the face of the disk, and a substantially horizontal rotary element having a substantially circular surface port-.ion of yielding material.dis osed to hold the coi-ks against the face o the disk while traveling along the cork support, substantiall as described.

11. An a rading machine for corks and y lforminnf a work engaging element to hold the cork between the periphery of the brush and the abrasive. face of the disk, and a suhstantially horizontal cork support extending across the face of the disk, substantially as described.

In testimony whereof, I have hereunto set my hand.

JOHN LOWMAN.

lVitnesses:

WALTER I. SXERTEN,

T. J. Osman. 

